<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <script src="../vue.js"></script>
</head>
<body>
    <div id="app">
        <h1>{{count}}</h1>
        <!-- prevent修饰符可以阻止默认事件,常见于form表单的submit事件 -->
        <button @contextmenu.prevent="">右键</button>
        <br>
        <!-- .top修饰符 阻止传播 -->
        <div @click="fn1">
            outer1
            <div @click.stop="fn2">inner1</div>
        </div>
        <br>
        <!-- .capture修饰符 把事件传播方式改为捕获 -->
        <div @click.capture="fn1">
            outer2
            <div @click="fn2">inner2</div>
        </div>
        <br>
        <!-- .self修饰符:当事件要被触发的时候额.target是否是自身,如果是在触发事件 -->
        <div @click.self="fn1">
            outer3
            <div @click="fn2">inner3</div>
        </div>
        <br>
        <!-- .once修饰符:一次性事件 -->
        <button @click.once="fn2">触发fn1</button>
        <br>
        <input type="text"> @keyup.13="fn1" <br>
        <input type="text" @keyup.enter="fn2">
        <input type="text" @keyup.space="fn1">
        <input type="text" @keydown.tab="fn2">
        <input type="text" @keydown.esc="fn1">
      </div>
      <script>
        Vue.config.productionTip = false;
    
        const vm = new Vue({
          el: "#app",
          data() {
            return {
              count: 0
            }
          },
          methods: {
            fn1() {
              console.log("fn1111");
            },
            fn2() {
              console.log("fn2222");
            }
          }
        })
      </script>
    </body>
    
    </html>